Section R. 325.1653a - Pump installation; hand pumpsRule 153a.
(1) A hand pump, hand pump head, hand pump stand, or similar device shall be constructed in accordance with the provisions of R 325.1653, shall provide for venting pursuant to the provisions of R 325.1657, and shall have a closed downward-directed spout and a sealed pump rod packing assembly.(2) A hand pump shall be attached to a steel well casing or standpipe by sealed flange or other method approved by the department. The flange shall be not less than 6 inches above a concrete slab or the ground surface. An annular space between a standpipe and a well casing shall be sealed in accordance with the provisions of R 325.1641 or with materials listed in subrule (5) of R 325.1603.(3) Where a well casing functions as a hand pump cylinder wall, the plunger shall be not less than 25 feet below the ground surface. A casing wall weep hole is not permitted.Mich. Admin. Code R. 325.1653a